Regulating-valve.



Patented Nov. I4, |899.

J. SCHNEIBLE.

BEGULATING VALVE. (Application med .my 24, 1899.)

`(No Model.)

In mfmm. @OMM M.. W.

l 55 @MW Ww Afm/?? NrrED STATES' PATENT Finca.

JOSEPH SOHNEIBLE, OF NEW YORK, N. Y.

REcULATlNe-VALVE.

SPECIFICATION forming part of Letters Patent No'. 636,858, datedNovember 14, 1899. Application liled July 24, 1899. Serial No. 724,891.(No model.)

To all whom t may concern.-

Be it known that I, JOSEPH SCHNEIBLE, a citizen of the United States,residing in the borough of Manhattan, city of New York, State of NewYork, have invented certain new and useful Improvements in Regulating-Valves, of which the following is a specification, reference being hadto the accompanying drawing, forming a part hereof.

This invention relates to regulating-valves in which the position of thevalve-plug is determined by a diaphragm or piston subject to thepressure of the fluid which liows through the valve and in which theaction of such diaphragm or piston is regulated or controlled by thepressure of a spring, means being provided to adjust such pressure.Usually the spring bears directlyl upon the diaphragm or piston or uponthe valve stem connected therewith, and the expansion or contraction ofthe spring is equal to the extent of movement of the diaphragm and ofthe valve-plug. Under some conditions of use it is desirable .that thevalve-plug shall have a relatively large movement for a given amount ofexpansion or contraction of the spring, and again it is oftentimesdesirable that the spring should have a relatively large expansion orcontraction for a given movement of the valveplug, as this relationmakes it possible to employ a spring of less stilfness and to securegreat delicacy and sensitiveness in the operation of the valve. lt isthe object of this invention to provide for securing such desirablevariation or relative difference of movement between the spring and thediaphragm or piston or valve-stem; and the invention consists in meanswhereby this resultis accomplished.

The accompanying drawing represents in vertical central section one formof regulating-valve which embodies the invention.

In the construction represented in the drawing the usual valve-body A isprovided with a double valve-seat a a and supports upon an enlargement Athe usual diaphragm B, the latter being held to its seat by a shell orcasing O. The valve stem and plug D is secured to the diaphragm in theusual manner and at its lower end is reduced to form a shoulder d andspindle d2 A ring d2, of suitable material to cooperate with thevalve-seat, is slipped upon the spindle ol to abut against the shoulderd and is followed by a sleeve d3. A second ring d4, of like material, isslipped upon the spindle to abut against the sleeve da, and all of theparts are held firmly together by a nut d5. This constructionfacilitates manufacture and permits the operative portions of thevalve-plug to be replaced readily when necessary Without removing thevalve plug and stem. A passage a2 from the valvechamber to thediaphragm-chamber permits the pressure of the liuid to be transmitted tothe diaphragm.

The spring E, which exerts its pressure upon the diaphragm in oppositionto the pressure of the iluid, is supported in line with the axis of thevalve-stem and diaphragm in asuitable spring-box e, which forms a partof the casing C, and is adjusted by a screw c', as usual.

Its lower end may be provided with a cap or shoe e2. Instead of actingdirectly upon the diaphragm or valve stern the spring acts through oneor more levers F. Two levers are preferablyemployed and may be held fromdisplacement by a yoke e3, secured to the shoe e2, and a pin c4, whichpasses through the ends of the levers. Bearing-points for the levers areprovided in the shell or casing C, as at c, and in the constructionshown, in which the range of movement of the free end of the spring isto be greater than the range of movement of the diaphragm, intermediatebearing-points are pro vided for the levers against the diaphragm. Forconvenience a cap B is applied to the diaphragm, being held in positionby the head of a nut b on the end of the valve-stem, on which it restscentrally, and is formed to provide the intermediate bearing-points forthe levers F, as at b'. The cap is free from the plate of the diaphragmand secures the proper balance of the levers. It will now be seen thatthe relative movement of the spring and the diaphragm or valve-stem willbe dependent upon the relative arrangement of the -bearing-points forthe levers and that in the construction shown the spring will have alarger movement and that consequently a spring of less relativestiffness may be employed and the valve will be correspondingly delicateand sensitive in operation.

It will be understood that the invention is not vto be limited to theprecise construction IOO and arrangement of parts shown and describedherein.

I claim as my invention*- The combination with a valvebody having aValve-seat, a valve-stem, a diaphragm, a casing closing said diaphragmin and a spring coperating with the diaphragm, and included Within theeasing in line with the axis Of the diaphragm, Of a shell or casingcovering the diaphragm, a cap resting upon the diaphragm and providedwith bearing-points and levers having bearing-points at their Outer endsagainst said shell Or casing and at intermediate points against the cap,and receiving at their inner ends the pressure Of the spring,substantially as shown and described.

This specification signed and witnessed this 17th day Of July, A. D.1899.

JOSEPH SCHNEIBLE. In presence Of- ANDREW H. SOOBLE, LOUIS R. MOORE.

